厦门大学学报（自然科学版）2017，Vol.56Issue(3)：359-363,5.DOI:10.6043/j.issn.0438-0479.201605025
双核自旋交叉化合物的合成、穆斯堡尔谱和磁性研究
Synthesis, M(o)ssbauer Spectra and Magnetic Properties of a Dimeric Spin-crossover Complex
摘要
Abstract
Spin-crossover materials have attracted considerable interests due to their potential applications such as the deve-lopment of miniature molecule-based display devices or data storage elements.We report here in the synthesis and characterization of a dimeric FeⅡ complex that shows spin crossover at high temperatures.Single-crystal X-ray diffraction studies at 173 K revealed that the FeⅡ ions were bridged by tricyanomethanide groups to form a dimeric structure,and the resulting complex was in a whole low-spin state.The M6ssbauer spectrum at room temperature indicated that the complex was composed of two low-spin FeⅡ species.Variable-temperature magnetic susceptibility measurements implied that about 50 ％ of the complex molecules underwent a low-spin-to-high-spin conversion in the 286-390 K temperature range.The result indicates that spin crossover can be induced by strong bridging ligands.关键词
双核/自旋交叉/磁性/穆斯堡尔谱Key words
dimer/spin crossover/magnetic property/M(o)ssbauer spectrum分类
化学化工引用本文复制引用
时海燕,危荣佳,陶军..双核自旋交叉化合物的合成、穆斯堡尔谱和磁性研究[J].厦门大学学报（自然科学版）,2017,56(3):359-363,5.基金项目
国家自然科学基金(21325103) （21325103）
